You are not finished

They said I as finished;
That my future was behind me;
That it was too late for me;
And I should pack my bags and go home;
I listened, but refused to believe;
And told them I did not believe;
That I was not finished;
That I would prove to them I was not finished;
And did;
See how I shine;
Standing on the mountaintop;
I am not finished;
Don’t accept when they say you are finished;
Show them you are not finished.